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whats with the rough idle?

Discussion in '2nd Gen. Tacomas (2005-2015)' started by RoyB, Nov 11, 2008.

  1. Nov 11, 2008 at 5:14 PM
    #1
    RoyB

    RoyB [OP] Well-Known Member

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    on the 4.0? my 3.4 4runner seemed to idle smoother.
     
  2. Nov 11, 2008 at 6:44 PM
    #2
    Swwacoma

    Swwacoma Doomsday Squad

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    I've noticed my RPMS will bounce a bit on really hot days, but nothing that has ever concerned me. My previous car I kind of destroyed the ECU and it would routinely bounce 2000 RPMS at lights, so maybe this is just such an improvement I don't really notice it.
     
  3. Nov 11, 2008 at 6:46 PM
    #3
    tacomaman06

    tacomaman06 Carolina Alliance: Enforcer

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    Will
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    getting there....
    rev the piss outta it and get some of that carbon build up out......it'll probably idle a bit better then. also...have you removed the secondary air filter yet??
     
  4. Nov 11, 2008 at 6:49 PM
    #4
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    FlimFlubberJAM
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    Will, I have noticed NO improvement from the removal of the secondary (Charcaol) filter. Idels the same, Fuel Economy=same, seat-O-pants dyno=same.
    I agree with Gaget that the removal of the charcoal filter is unnessasary. :)
     
  5. Nov 11, 2008 at 6:50 PM
    #5
    tacomaman06

    tacomaman06 Carolina Alliance: Enforcer

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    getting there....
    that may be true man........but when i did it on my 06 I noticed a better idle....but that was all.
     
  6. Nov 11, 2008 at 6:58 PM
    #6
    Brunes

    Brunes abides.

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    Yeah...Mine didn't make any changes that I noticed either. I figure I reduced the weigh so it must be good (kidding)
     
  7. Nov 11, 2008 at 7:01 PM
    #7
    RelentlessFab

    RelentlessFab Tacoma offroad armor fabricating beast Vendor

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    my 4.0 seems to idle pretty damn smooth to me.... maybe its because i never let any carbon build up from constant babying and crappy gas;). :burnrubber:
     
  8. Nov 11, 2008 at 8:31 PM
    #8
    WilsonTheDog

    WilsonTheDog Kylie's dad

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    Mine is definitely smoother without the charcoal filter. There's just no question about that.
     
  9. Nov 12, 2008 at 3:33 PM
    #9
    Kyouto42

    Kyouto42 Iron Beard

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    Meh I think it's pretty decent for a truck.
     
  10. Nov 12, 2008 at 3:35 PM
    #10
    RoyB

    RoyB [OP] Well-Known Member

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    1700 miles, all stock. 2nd filter still in. idles similar to my corvette. my camry i didnt know if it was running most of the time and my 4 runner was smooth too. just find it odd that it runs so rough when most are smooth.
     
  11. Nov 12, 2008 at 4:18 PM
    #11
    wushaw

    wushaw Well-Known Member

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    Mine is smooth, quiet and all that good happy hs.
     
  12. Dec 1, 2008 at 8:27 PM
    #12
    lendaddy

    lendaddy New Member

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    None yet....
    I agree with Roy about the rough idle. Not terrible but more noticeable than I expected from a new Toyota.

    Mine is an '09 DC LB Sport with about 700 miles.... any chance this will get better with more of a break in?
     
  13. Dec 1, 2008 at 8:33 PM
    #13
    tacomaman06

    tacomaman06 Carolina Alliance: Enforcer

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    getting there....
    it should. give it a few tanks of gas and see what happens.
     
  14. Dec 1, 2008 at 10:22 PM
    #14
    Rtrn2taco

    Rtrn2taco Nostalgia...

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    6,000 miles and I know what you mean. Not enough to complain about but the 06 4Runner didn't seem to idle like the tacoma.
     
  15. Dec 2, 2008 at 6:45 AM
    #15
    Impala1ss

    Impala1ss Member

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    My '09 AC SR5, 4 cyl. idled perfectly until I drove it 3,100 miles on a trip. Now it has a rough idle. Don't think I built up any carbon averaging 80-85 MPH the entire way.
     

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